Desktop Memory System: hardware compatibility mismatch. A part fits but its electrical specification or firmware support differs.

The distinguishing clue

The system is stable with the original part but not the replacement.

Checks before an assessment

Record the exact memory-kit and motherboard models from existing records, plus any capacity or POST message. Do not force modules or repeatedly swap them during power-on tests.

Stop point: Forcing a module into a damaged or incorrectly keyed slot can ruin both parts.

Workshop confirmation and repair

Device-level check: Compare known modules and slots, inspect socket condition and review supported timings.

Targeted check: Compare supported revisions, capacity, timings and power requirements. If confirmed: Install a supported component and restore approved configuration.

Repair boundary: Repair the confirmed slot, channel, board or compatibility fault.

Related cause to rule out

When diagnostic progress stops before the operating system loads, also consider Desktop RAM Instability: Separate Configuration, Modules and Slots before choosing a repair.

Checks after the work

After repair or replacement, check each channel, full capacity, memory test and sustained workload.

For an AEPC repair assessment in East Auckland, provide the exact model and observed clue. Call 027 908 8880 before visiting the Burswood workshop.